Index: INSTALL.txt
===================================================================
RCS file: /cvs/drupal/drupal/INSTALL.txt,v
retrieving revision 1.39.2.3
diff -u -p -r1.39.2.3 INSTALL.txt
--- INSTALL.txt	10 Jan 2008 22:14:24 -0000	1.39.2.3
+++ INSTALL.txt	13 Dec 2010 20:44:49 -0000
@@ -22,8 +22,9 @@ are created automatically.
 REQUIREMENTS
 ------------
 
-Drupal requires a web server, PHP4 (4.3.5 or greater) or PHP5
-(http://www.php.net/) and either MySQL (http://www.mysql.com/) or PostgreSQL
+Drupal requires a web server, PHP4 (4.3.5 or greater) or PHP5 (through 5.2.x
+only; 5.3.x and later versions are not supported) (http://www.php.net/) and
+either MySQL (http://www.mysql.com/) or PostgreSQL
 (http://www.postgresql.org/). The Apache web server and MySQL database are
 recommended; other web server and database combinations such as IIS and
 PostgreSQL have been tested to a lesser extent. When using MySQL, version 4.1